diff --git a/tools/build/cross-build/include/linux/sys/stat.h b/tools/build/cross-build/include/linux/sys/stat.h
index fa40b7e747b6..5937920ce461 100644
--- a/tools/build/cross-build/include/linux/sys/stat.h
+++ b/tools/build/cross-build/include/linux/sys/stat.h
@@ -1,62 +1,70 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause
  *
  * Copyright 2018-2020 Alex Richardson <arichardson@FreeBSD.org>
  *
  * This software was developed by SRI International and the University of
  * Cambridge Computer Laboratory (Department of Computer Science and
  * Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
  * DARPA SSITH research programme.
  *
  * This software was developed by SRI International and the University of
  * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
  * ("CTSRD"), as part of the DARPA CRASH research programme.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 #pragma once
 /*
  * glibc shipped with Ubuntu 16.04 doesn't include a definition of
  * struct timespec when sys/stat.h is included.
  */
 #define __need_timespec
 #include <time.h>
 
 /* <bits/stat.h> contains a member named __unused. */
 #include "../__unused_workaround_start.h"
 #include_next <sys/stat.h>
 #include "../__unused_workaround_end.h"
 
 #define st_atimensec st_atim.tv_nsec
 #define st_mtimensec st_mtim.tv_nsec
 #define st_ctimensec st_ctim.tv_nsec
 
 #define st_atimespec st_atim
 #define st_mtimespec st_mtim
 #define st_ctimespec st_ctim
 
 #ifndef S_ISTXT
 #define S_ISTXT S_ISVTX
 #endif
 
+#ifndef DEFFILEMODE
+#define DEFFILEMODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)
+#endif
+
+#ifndef ALLPERMS
+#define ALLPERMS (S_ISUID | S_ISGID | S_ISTXT | S_IRWXU | S_IRWXG | S_IRWXO)
+#endif
+
 /* This include is needed for OpenZFS bootstrap */
 #include <sys/mount.h>